Machine-gun



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(No Model.)

' H. ALLENDER.

MAGHINE GUN.

No. 372,191. Patented 001;. 25.1887

3 Sheets-Shet '2.

(NoModeL) H. ALLENDER.

MACHINE GUN.

No. 372,191. Patented 0011.25. 1887 gmoe wfoz r g Sheets-Sh 4 .H.ALLENDER. I

M CHINE GUN. No. 372,191. Patented 0012.25. 1887...

UNITED- STATES PATENT IO FICE.

HENRY ALLENDER, or DETROIT, MICHIGAN.

MACHlNE-GUN.

SPECIFICATION forming part of Letters Patent No. 372.191, dated October 25,

Application filed April 1, 1887. Serial No. 233,329. (lfIo model.)

To all whom, it nury concern:

Be it known that I, HENRY ALLENDER, of Detroit, in the county of \Vayne and State of Michigan, have invented a new and usefui I1n-. provement in Machine-Guns, of which the following is a specification. My invention consists in a lnachinegun the main principle of which is the use of semi chambers, whereby the reciprocating motion necessary to insert a fresh cartridge and extract the shell is entirely dispensed with.

Figure 1 is a perspective of the eoinpllate gun. Fig. 2 is a rear elevation of the gun.

Fig. 3 is a. plan' view, with the upper half of the case removed. Fig. 4' is a reafel'ev ation of the two chamber-shafts. Fig. 5 is a crosssection on the line av :10, Fig. 1. Fig. 6 is an end view, and Fig. 7 an elevation, of one of the semi-chambers.

1 represents the case of' the gun, made of metal, oval in form externally, and internally formed into two cylinders, each of which opens into a vertical slot,.2, cut through both parts of the case, as clearly shown in Fig. 5. The

' two parts of the case are provided with flanges 13, to receive bolts or screws 12, by which the case is held together. On the rear end of the case is a flange in which are formed the two boxes 8 and 9, to form bearings for the shafts, and on the front of the case is a flange in which are formed boxes 22 23 for the front journals of the shaft, while into said flange, between said boxes, is screwed the end of a barrel,-7, as clearly shown in Fig. 3.

4 4 represent two shafts, each of which is scalloped with an equal number of lon,g;it-l 1dinal grooves, there being six in each shaft as illustrated in the drawings, though this number maybe greater or less. The right-hand shaft 4, Fig. 3, is journaled at the front end in bore23 and at its rear end in box 9, and, carries at the rear end of its journal a ratchetwheel, 17, inwhich are as many teeth 27 as there are longitudinal grooves in the shaft.

The left-hand shaft- 4, Fig. 3, is journaled at its front end in boX 22 and/at its rear end in box 8, and is extended beyond said box, as shown at 18, to receive a crank-1d, by which motion is communicated to said shaft. The rear end of the left-hand shaft 4, within the case, is enlarged .and provided ou'its outer edgewitha number of circular projections,

L which projections is set a firing-pin,;25, capable of longitudinal motion, as is clearly shown in Fig. 4, inwhich the dotted lines represent the grooved shaft. The rear end of the right hand shaft, within the case, is made of such form as to mesh with the opposing portion of theleft hand shaft, as just described, and as clearly shown in Figr fifl-"whereby rotation of the left-hand shaft 4 e2iuses similar rotation the projections 24 on the left-hand shaft meshing with the depressions 26 in the right-hand shaft.

in oppositeldirection-of-the right hand shaft,

3 represents a.semi-cartridge-chamber, having at one end an annular groove, 6, to receive the rim-of a cartridge, and having its edges out on the same circle as shaft 4. The semichambers 3 are made to fitthe longitudinal grooves in the shafts 4- and to turn with said shaftsin the case, always presenting their open sides to the periphery of the shaft on which they are carried.-

19 represents a firing-pin in line'with the center of barrel 7, carried in the flange at the rear of the case, and-adapted to register with each of the firingpins 25 as said .pins come opposite the center of thebarrel. j

15 represents a'hammer, pivoted at 11 in a log, 10, formed on box 9, and its endextends over firing-pin 19.

16 represents a cam on' theinner 'side of hammer 15, which comes in contact with theteeth on ratchet-wheel.17 when said wheel is rotated, whereby the hammer is actuated...

20 represents 'a spring secured to the case at 21 21, passing under the short end of hammer 15 and adapted to press the other end of said hammer toward firingin 19. I have shown this spring in the formpof'a horseshoe; but its form is immaterial, as its office is simply'to throw the hammer against the firing-pin.

. 9s The operation of my invention is asfcllows:

A cartridge being dropped into slot 2 in the upper half of easel, with the bullet toward the barrel 7, will an through said slot until it rests against and is supported by the periphery of shafts 4. On rotating these shafts by means of crank 14 the two semi-chambers 3 which are nearest said slot 2 will approach each other, and as the edge of the cavities in said chambers meet, the cartridge will drop into said cavities, and by the further'rotation of said shafts a complete closed chamber will be formed,as shown at 5, within which will be the cartridge. As the shafts have rotated, one of the teeth 27 on ratchet-wheel17 will have raised cam 16 so as to lift the hammer against the action of spring 20, and at the instant the two opposing semi-chambers 3 form a complete chamber the hammer 15 will be released, will strike the end of firing-pin 19, will drive the pin against the firing-pin 25, which is in line with the complete chamber then formed, and the firing-pin willexplo'de the cap in the cartridge, and thus fire the gun.

chamber 3, containing the exploded cartridgeshell, to separate, and the shell will either fall out through the slot 2 in the lower half of the case, or, if it' sticks in one of the semi-chamhers, will be removed therefrom by the edge of said slot 2 and will fall out of the gun. q By feeding the cartridges in anyconvenient man er to the slot 2 in-the upper half of the case,

' as made separate from the shafts'4 and inserted in said shafts.

It is obvious, however, that said semi-chambers may be formed direct-lyin said shafts, if desired.

The further rotation of the shafts 4 causes the semi- What I claim as myinvention, and desire to secure by Letters Patent, is

1. A machine-gun having two rotary shafts, each carrying onits periphery a series of semichambers adapted to register with each other, a wheel on one of saidshafts carrying a number of circular projections corresponding with the semi'chambe'rs therein, and having in each projection a firing-pin opposite the center of said semi-chamber,-a wheel onthe other of 1 2. In a breech-loading gun, a case having two rotary shafts journaled therein, each having in its periphery one or more semicartridge chambers, a gear-wheel on one shaft, having projections adapted to form a breech for each cartridge-chamber and having a firing-pin in each projection, and a gear-wheel on the outer shaft, having depressions adapted to mesh with said projections, substantially as shown 'and described.

HENRY ALLENDER.

Witnesses:

G. M. MAsoN, HEnnv B. Lo'rHRor. 

